Pumping apparatus



July 14, 1953 c. A. LOWE PUMPING APPARATUS 2 snuets fshet 1 Filed Feb. 8', 195a INVENTOR. CLARENCE A. LOWE #63 114 f 53 mm;

July 14, 1953 A. LOWE 645, 8

PUMPING APPARATUS Filed Feb. 8, 1950 2 Sheets-Sheet 2 [)V V EN TOR. CLARENCE A. LOWE nfimlizwg,

1 w Uf ""7 Patented July 14, 1953 Ideal Sales Corporation, Columbus,

poration ofjohlo Ohio, a cor- Application February8, 1950, Serial No. 143,061

4 Claims. (01. 103-208) The present invention relates to a pumping a paratus and has particular application to a fuel pumping apparatus for an internal combustion engine wherein fuel is lifted from a fuel tank to a bowl associated with the fuel inlet ofth'e engine.

It is an object of the present inventionto yieldingly suspend a piston for relative movement within the bore of a cylinder block and impart reciprocating movement to the cylinder block so as to create relative movement between thecylinder block and the piston and utilize this relative movement for pumping a fluid.

The present invention is particularly applicable to machines operated by an internal combustion engine wherein vibrations are created, and it is a further object of the present invention to utilize the vibration of the engine reciprocating the cylinder block of a fuel pump for the engine. I

Further objects and advantages of the presen invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred form of tank and showing, in elevation, the fuel pump therein; and

Fig. 3 is a longitudinal sectional view of the fu pump, the piston being shown in elevation.

Referring to the drawings, particularly Fig. 3, there is shown a pump including a cylinder 2| having a longitudinal cylindrical bore 22. A piston 24 is disposed within the cylindrical bore 22 and yieldingly held in the bore by oppositely disposed coil springs 25, one coil spring abutting the top of the piston and the other the bottom of the piston. The lower end of the lower spring 25 rests upon an abutment or shoulder 2? at the lower end of the bore 22. The upper end of the upper spring'25 abuts the lower end 28 of a bushing 29. threaded and is fastened in, the upper end of the cylinder block 2|. Bushing 29 is hollow for the flow of fluid therethrough as shown at 3|. The upper part 32 of the hollow 3| is hexagonal in shape for receiving a wrench by which the bushing is tightened or loosened. The lower end of the cylinder block 2| is provided with a central longitudinal passage 34 which merges with transverse grooves 35 at the extreme lower end of the block 2 Bushing 29 is exteriorly 'piston'to above the same.

from the exterior of the pump to the screen 45;

. 2 The lower end of block 2| is threaded exteriorly as at 3'! for receiving a cap 38. An interior horizontal wall 39 of the cap provides a valve seat for a disc type valve 40, which valve '40 is enclosed within a chamber 4| formed by the interior of the cap 38 and the extreme lower part of thecylinder block 2|. .The horizontal portion of the cap 38 is provided with a central longitudinalopening 44 for the passage of fluid from the exterior to the chamber 4|. A screen 45 is carried at the extreme bottom of the cap 38. The diameterof the bore 22 is somewhat larger thanthediameter of the piston 24 to permit the restricted flow of liquid from below the Thus fluid may flow passage 44 into chamber 4| when-the valve is lifted off its seat 39. From the chamber 4|, the fluid flows through the transverse grooves 35 into passage-34m the lower part of the bore 22, through the bore 22 and throughthe hollow 3|in the bushing 32.

The upper end of the cylinder block 2| is exteriorly'threaded for receiving a pipe coupling 4'! which connects the block 2| with a pipe48.

Pipe 48' and the pump 20 are suspended from the upper part of a fuel tank 50 by a coupling 5|. This coupling is connected by fittings 52 and 53 with one end of a pipe 54; the opposite end of the pipe 54 is connected by a coupling 55 to a fuel bowl 56. Thisfuel bowl is connected with a carburetor or other form of fuel control device foran internal combustion engine. In the instant application the bowl '56 is connected with a carburetor 51 of the internal combustion engine 58. Fuel deliveredthrough the pipe 54 to the bowl '56 is in excess of that consumed by the internal combustion engine and a suitable overflow (not shown) is connected by a return 2 I,"whic'h latter is fastened to the tank, with the result that relative movement is imparted be tween the cylinder block 2| and the piston 24. During vibration, as the block 2|, moves downwardly relative to the piston 24 a sub-atmospheric pressure is created in the bore 22 below the piston 24, with the result that fuel will be forced through the opening 44, lifting the valve 48 from its seat, and into chamber 4|. Then as the cylinder block 2| moves upwardly relative to the piston 24, destroying the suction action, the valve 40 will be seated and the fuel will be trapped in the chamber 4|. Upon repeated relative reciprocation between the cylinder block 2| and the piston 24, the entire bore 22 and the fluid lineleading tov the, bowl 1 58 and the bowl 56 will be filled with fuel. The'springs25 should be sufficiently light so that they merely suspend the piston 24 within the bore 22 and the clear ance between the piston 24 and the. bore 22 should be such that the passage provided'by such clearance offers sufficient resistance. to. prevent. the total destruction of a subatmosphericpres sure when the block 2| moves downwardly with respect to the piston 24. of the invention, wherein the diameter of the piston 24 is A", .265 inch, and the piston is in length. In a large size pump, for example, a pump employing a diameter piston, 1" in length, the bore would have a diameter of .520". In asmaller pump, for example, onein which a piston, in diameter is employed, in length, the bore would have a diameter of .135.

The present invention can be applied to any machine in which vibration is-imparted to'the fuel tank. Obviously, for the greatest pumping capacity, the cylinder boreshould be arranged longitudinally of the greatest degree of vibration. For example, if the highest degree ofvibration' isvertical, then the cylinder block 2| should ex. tend vertically longitudinally. For one illustration of an embodiment of thepresent invention, I have applied the same to a tampingmachine 63 of the type shown and described in my co-pending application Serial No. 644,071, filed January 29, 1946, in which the internal combustion engine 58 and the tank 50 are carried by,a frame, part of which is shown at 64. The frame 64 is carried by a tamping shoe 85 and oppositely disposed rear rollers 86. The engine 58 imparts tampingmovement of the shoe'85 as the machinev moves across the surface being ,tamped. The engine operated machine 66 causes vertical vibration of the tank 58 to impartthe pumping action described hereinbefore.

By virtue of thepresentinvention, a simplified pump has. been provided in: which vibrations of, the machine is used as the sole forcefor actuating,

the pump.

While the form of embodiment of the .present invention ashereindisclosed constitutes, a preferred form, it is to be understood that other forms pletely combined within the cylinder. balancing.

In apreferred. form the diameter of the .boreissprings on opposite ends of the piston, and a check valve in the inlet for preventing fluid flow from the cylinder back through the inlet; and means for imparting vibratory movement to the tank and the pump cylinder carried by the tank.

2. In a pumping system in which fluid is pumped by vibrations imparted to the pump, in combination a tank which-is subjectedto' vibration; a pump consisting only of a vertically extending cylinder through which the fluid flows, said cylinder being secured to the tank for vibration with the latter, said cylinder having an inlet at one end communicating with the interior of the tank. andhavingan outlet at the opposite end, a floating piston completely combined within the-cylinder, means yieldingly urging the pistonupwardly, and a check valve in the inlet for preventing fluid flow from the cylinder back through the inlet; and means for imparting vibratory movement to the tank and the pump cylinder carried by the tank.

3. In a pumping system in which fluid is pumped by vibrationsv imparted to the pump, in combination a tank which is subjected to vibration; a pump comprising only a cylinder through which the fluid flows, said cylinder being securedto the tank for vibration with the latter, said cylinder having an inletat one end communicating with the interior of the tank and having an outlet at the opposite end, an impervious and floating piston completely combined within the cylinder, balancing springs on opposite ends of the piston, and a check valve in the inlet for preventing fluid flow from the cylinder back through the inlet; and means for imparting vibratory movement to the tank and the pump cylindercarried by the tank.

4. In a pumping system in which fluid is pumped by vibrations imparted to the pump, in combination, a tank which is subjected to vibration; a. pump comprising only a vertically exextending cylinder through which the fluid flows, said cylinder being secured to the tank for vibra tion with the latter, said cylinder having an inlet at one end communicating with the interior of the tank andv having an outlet at the opposite end, an impervious and floating piston completely combined within the. cylinder, means yieldingly urgingthe piston upwardly, and a check valve in the inlet for 'preventingfluid flow from the cylinder back through the inlet; and

means for imparting vibratory movement to the tank and the pump cylinder carried by the tank.

CLARENCE A. LOWE.

References Cited in the flle of this patent UNITED STATES PATENTS Number Name Date 212,252 Misso Feb. 11, 1897 1,119,801 Brigel Dec. 8, 1914 1,457,721 Wolf" June 5, 1923 1,831,993 Braselton et al. Nov. 17, 1931 FOREIGN PATENTS Number Country Date 519,599 France Jan. 27, 1921 

